Levy, H.  1889-1975. <br/><br/>
Finite difference equations / 
by H. Levy ; F. Lessman 
 - London :  Pitman & Sons,  1959 
 - 278 p :  ill। ;  23 cm 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Difference equations
<br/><br/><label>Dewey Class. No.: </label>515.625  / LEF 1959